CN112083560A - Zoom lens - Google Patents

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Publication number
CN112083560A
CN112083560A CN202011105730.XA CN202011105730A CN112083560A CN 112083560 A CN112083560 A CN 112083560A CN 202011105730 A CN202011105730 A CN 202011105730A CN 112083560 A CN112083560 A CN 112083560A
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lens
equal
zoom lens
group
focal length
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赖景辉
蓝岚
杨学坤
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Sunny Optics Zhongshan Co Ltd
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Sunny Optics Zhongshan Co Ltd
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Priority to CN202011105730.XA priority Critical patent/CN112083560A/en
Publication of CN112083560A publication Critical patent/CN112083560A/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G02B15/142—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having two groups only
    • G02B15/1425—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective having two groups only the first group being negative
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
    • G02B13/146—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation with corrections for use in multiple wavelength bands, such as infrared and visible light, e.g. FLIR systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Lenses (AREA)

Abstract

The invention relates to a zoom lens, which sequentially comprises a compensation group (a) with negative focal power, a diaphragm and a variable-power group (b) with positive focal power along the direction from an object side to an image side, wherein the focal length of the compensation group (a) is Fa, the focal length of the variable-power group (b) is Fb, and the following requirements are met: Fa/Fb is more than or equal to-0.98 and less than or equal to-0.79. The zoom lens has the characteristics of high pixel, low cost, no thermalization and infrared confocal property.

Description

Zoom lens
Technical Field
The invention relates to the technical field of optical systems and device design, in particular to a zoom lens.
Background
In order to adapt to the diversity of monitoring places, clear imaging of far and near ends needs to be obtained in the image pickup process, and therefore the monitoring lens is required to have a sufficient zooming effect. The zoom monitoring lens is accompanied by an increase in the number of lenses and a complicated lens structure while satisfying the quality of near-distance and long-distance imaging. In addition, in the field of security protection, a camera lens is generally required to have infrared confocal performance and the characteristic of image non-rectification at high and low temperatures, but in general, it is difficult to achieve high resolution, infrared confocal performance, non-rectification at high and low temperature environments, and low cost in a zoom optical system.
Disclosure of Invention
The present invention is directed to solving the above problems and to providing a zoom lens.
In order to achieve the above object, the present invention provides a zoom lens, sequentially including, in a direction from an object side to an image side, a compensation group having negative optical power, a stop, and a zoom group having positive optical power, where a focal length of the compensation group is Fa, and a focal length of the zoom group is Fb, and satisfy: Fa/Fb is more than or equal to-0.98 and less than or equal to-0.79.
According to one aspect of the present invention, the compensation group includes, in order in an object-side to image-side direction, a first lens having negative optical power, a second lens having negative optical power, and a third lens having positive optical power.
According to an aspect of the present invention, the variable power group includes, in order in an object side to image side direction, a fourth lens having positive power, a fifth lens having positive power, a sixth lens having negative power, a seventh lens having positive power, and an eighth lens having negative power.
According to one aspect of the invention, the focal length of the fourth lens is f4, and the focal length Fb of the variable power group satisfies the relation: f4/Fb is more than or equal to 1.32 and less than or equal to 1.86.
According to one aspect of the invention, the refractive index and abbe number of the fourth lens are Nd4 and Vd4, respectively, and satisfy: nd4 is more than or equal to 1.46 and less than or equal to 1.59, and Vd4 is more than or equal to 68.6 and less than or equal to 96.2.
According to one aspect of the invention, the focal length of the fifth lens is f5, and the focal length of the sixth lens is f6, so that: f5/f6 is more than or equal to-2.8 and less than or equal to-0.95.
According to one aspect of the invention, the seventh lens and the eighth lens comprise a cemented lens set.
According to an aspect of the invention, the Abbe number of the seventh lens is Vd7, the Abbe number of the eighth lens is Vd8, and 34 Vd7-Vd8 are satisfied, wherein Vd8 is less than or equal to 55.
According to one aspect of the invention, the second lens, the third lens, the fifth lens and the sixth lens are aspheric lenses.
According to an aspect of the present invention, a focal length Fw at a wide-angle end of the zoom lens and a focal length Fb of the variable power group satisfy a relation: Fw/Fb is more than or equal to 0.21 and less than or equal to 0.43.
The zoom lens is provided with eight lenses, and through reasonable collocation of positive and negative focal powers, the zoom lens has the advantages of excellent performance of super wide angle and large aperture, wide field angle variation range, the telescopic end can reach below 30 degrees, the wide angle end can reach above 160 degrees, the maximum aperture can reach F1.4, and wide market application prospect is achieved.
The zoom lens of the present invention, wherein the second lens, the third lens, the fifth lens and the sixth lens are provided as aspherical lenses. According to the arrangement, the aspheric lens and the spherical lens are reasonably matched, the powerful aberration correcting capability of the aspheric lens is fully utilized, and the back focal drift caused by the change of the refractive index of the lens along with the temperature is greatly eliminated, so that the zoom lens still has good resolution ratio in high-temperature and low-temperature environments.
According to the zoom lens, the seventh lens and the eighth lens in the zoom lens group form a cemented lens group. Wherein the Abbe number of the seventh lens is Vd7, the Abbe number of the eighth lens is Vd8, and the Abbe number of the eighth lens is 34-Vd 7-Vd 8-55. The arrangement is favorable for correcting chromatic aberration of the wide-angle end and the telephoto end of the zoom lens, so that the reasonable balance of the chromatic aberration of the whole zoom system is achieved, and the infrared confocal performance is realized.
Drawings
Fig. 1 schematically shows a configuration diagram at a wide-angle end of a zoom lens according to embodiment 1 of the present invention;
FIG. 2 is a schematic diagram showing the configuration of a telephoto end of the zoom lens according to embodiment 1 of the present invention;
fig. 3 schematically shows a ray fan at the wide-angle end of a zoom lens according to embodiment 1 of the present invention;
fig. 4 schematically shows a vertical axis chromatic aberration diagram at the wide-angle end of a zoom lens according to embodiment 1 of the present invention;
FIG. 5 is a light ray fan diagram schematically showing the telephoto end of the zoom lens according to embodiment 1 of the present invention;
FIG. 6 is a view schematically showing vertical axis chromatic aberration at the telephoto end of the zoom lens according to embodiment 1 of the present invention;
fig. 7 schematically shows a structural view of a zoom lens according to embodiment 2 of the present invention at a wide-angle end;
FIG. 8 is a view schematically showing the structure of the telephoto end of the zoom lens according to embodiment 2 of the present invention;
fig. 9 schematically shows a ray fan diagram at the wide-angle end of a zoom lens according to embodiment 2 of the present invention;
fig. 10 schematically shows a vertical axis chromatic aberration diagram at the wide angle end of a zoom lens according to embodiment 2 of the present invention;
FIG. 11 is a light ray fan diagram schematically showing the telephoto end of the zoom lens according to embodiment 2 of the present invention;
FIG. 12 is a view schematically showing vertical axis chromatic aberration at the telephoto end of the zoom lens according to embodiment 2 of the present invention;
fig. 13 schematically shows a structural view of a zoom lens according to embodiment 3 of the present invention at the wide-angle end;
FIG. 14 is a view schematically showing the structure of the telephoto end of the zoom lens according to embodiment 3 of the present invention;
fig. 15 schematically shows a ray fan at the wide-angle end of a zoom lens according to embodiment 3 of the present invention;
fig. 16 is a vertical axis chromatic aberration diagram schematically illustrating a wide-angle end of a zoom lens according to embodiment 3 of the present invention;
FIG. 17 is a light ray fan diagram schematically showing the telephoto end of the zoom lens according to embodiment 3 of the present invention;
fig. 18 is a view schematically showing vertical axis chromatic aberration at the telephoto end of the zoom lens according to embodiment 3 of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
The present invention is described in detail below with reference to the drawings and the specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.
With reference to fig. 1 and fig. 2, the zoom lens includes, in order from an object side to an image side, a compensation group a having negative optical power, a stop, and a zoom group b having positive optical power, where a focal length of the compensation group a is Fa, and a focal length of the zoom group b is Fb, and the following requirements are satisfied: Fa/Fb is more than or equal to-0.98 and less than or equal to-0.79.
In the zoom lens, along the direction from the object side to the image side, the compensation group a sequentially comprises a first lens 1 with negative focal power, a second lens 2 with negative focal power and a third lens 3 with positive focal power. The variable power group b sequentially comprises a fourth lens 4 with positive focal power, a fifth lens 5 with positive focal power, a sixth lens 6 with negative focal power, a seventh lens 7 with positive focal power and an eighth lens 8 with negative focal power.
The zoom lens is provided with eight lenses, and through reasonable collocation of positive and negative focal powers, the zoom lens has the advantages of excellent performance of super wide angle and large aperture, wide field angle variation range, the telescopic end can reach below 30 degrees, the wide angle end can reach above 160 degrees, the maximum aperture can reach F1.4, and wide market application prospect is achieved.
The zoom lens of the present invention, wherein the second lens 2, the third lens 3, the fifth lens 5, and the sixth lens 6 are provided as aspherical lenses. According to the arrangement, the aspheric lens and the spherical lens are reasonably matched, the powerful aberration correcting capability of the aspheric lens is fully utilized, and the back focal drift caused by the change of the refractive index of the lens along with the temperature is greatly eliminated, so that the zoom lens still has good resolution ratio in high-temperature and low-temperature environments.
The zoom lens of the present invention, wherein all aspherical surfaces satisfy the following formula:
Z＝cy2/{1+[1-(1+k)c2y2]1/2}+a4y4+a6y6+a8y8+a10y10+a12y12
z is the axial distance from the curved surface to the top point at the position which is along the direction of the optical axis and is vertical to the optical axis by the height h; c represents the curvature at the apex of the aspherical surface; y is the radial coordinate of the aspheric lens; k is a conic coefficient; a is4、a6、a8、a10、a12Respectively representing aspheric coefficients of fourth order, sixth order, eighth order, tenth order and twelfth order.
In the zoom lens of the present invention, the focal length of the fourth lens element 4 is f4, and the focal length Fb of the zoom group b satisfies the following relation: f4/Fb is more than or equal to 1.32 and less than or equal to 1.86. The refractive index and the abbe number of the fourth lens 4 are Nd4 and Vd4 respectively, and satisfy: nd4 is more than or equal to 1.46 and less than or equal to 1.59, and Vd4 is more than or equal to 68.6 and less than or equal to 96.2. The focal length of the fifth lens 5 is f5, the focal length of the sixth lens 6 is f6, and the following conditions are satisfied: f5/f6 is more than or equal to-2.8 and less than or equal to-0.95.
In the zoom lens, the seventh lens 7 and the eighth lens 8 in the variable power group b form a cemented lens group. Wherein the Abbe number of the seventh lens 7 is Vd7, the Abbe number of the eighth lens 8 is Vd8, and the Abbe number satisfies 34-Vd 7-Vd 8-55. The arrangement is favorable for correcting chromatic aberration of the wide-angle end and the telephoto end of the zoom lens, so that the reasonable balance of the chromatic aberration of the whole zoom system is achieved, and the infrared confocal performance is realized.
The zoom lens has a focal length Fw at the wide-angle end, and satisfies the following relation with the focal length Fb of the variable magnification group b: Fw/Fb is more than or equal to 0.21 and less than or equal to 0.43.
In summary, the zoom lens of the present invention is configured according to the above limitations, so that the zoom lens of the present invention has an ultra-wide angle and a large aperture, and can reduce the production cost under the condition of ensuring image undistortion under high resolution, infrared confocal, high and low temperature environments.
The zoom lens according to the present invention is specifically explained below by giving 3 sets of specific embodiments according to the above-described arrangement of the present invention. The zoom lens comprises 8 lenses, wherein the seventh lens 7 and the eighth lens 8 are combined to form a cemented lens group, 17 optical surfaces including a diaphragm and an image surface are added, and for convenience of description, the 17 optical surfaces are sequentially numbered from S1 to S17.
Three sets of embodiment data are as in table 1 below:
conditional formula (II) Example 1 Example 2 Example 3
-0.98≤Fa/Fb≤-0.79 -0.79 -0.83 -0.98
0.21≤Fw/Fb≤0.43 0.29 0.43 0.21
1.32≤f4/Fb≤1.86 1.77 1.86 1.32
1.46≤Nd4≤1.59 1.46 1.49 1.59
68.6≤Vd4≤96.2 96.2 81.6 68.6
-2.8≤f5/f6≤-0.95 -1.09 -0.95 -2.80
34≤Vd7-Vd8≤55 45.3 34.1 55
TABLE 1
The first implementation mode comprises the following steps:
fig. 1 and 2 schematically show structural diagrams of the zoom lens of the present embodiment at the wide-angle end and the telephoto end, respectively. Referring to fig. 1 and fig. 2, in the present embodiment, the first lens group a of the zoom lens includes three lenses, and the second lens group b includes five lenses, wherein the seventh lens element 7 and the eighth lens element 8 form a cemented lens group.
Table 2 below lists relevant parameters of each lens of the present embodiment, including surface type, radius of curvature, thickness, refractive index of material, abbe number:
surface number Surface type Radius of curvature Thickness of Refractive index Abbe number
1 Spherical surface Infinity 0.61 1.71 50.3
2 Spherical surface 7.638 4.46
3 Aspherical surface -15.372 1.16 1.53 56.1
4 Aspherical surface 13.285 0.15
5 Aspherical surface 11.645 2.15 1.64 23.5
6 Aspherical surface -360.125 Variable
STO Spherical surface Infinity Variable
8 Spherical surface 8.574 2.35 1.46 96.2
9 Spherical surface 210.077 0.15
10 Aspherical surface 6.425 1.68 1.53 56.1
11 Aspherical surface 10.754 0.96
12 Aspherical surface -28.815 1.20 1.66 20.3
13 Aspherical surface 36.299 0.47
14 Spherical surface 8.195 3.00 1.46 90.2
15 Spherical surface -8.195 3.10 1.74 44.9
16 Spherical surface -17.527 Variable
Image plane Spherical surface Infinity
TABLE 2
Table 3 lists the aspherical coefficients of the respective aspherical lenses in the present embodiment:
surface number k a4 a6 a8 a10 a12
3 -1.0 3.391E-04 -3.527E-05 1.388E-06 -2.354E-08 1.433E-010
4 -1.0 1.152E-04 -1.654E-05 1.474E-07 -1.614E-09 1.274E-010
5 -1.0 -3.398E-04 2.287E-05 -1.237E-06 1.442E-08 2.861E-011
6 -1.0 -1.712E-04 1.150E-03 -4.579E-07 1.832E-09 1.248E-011
10 -1.0 5.768E-04 -5.938E-05 2.248E-05 -1.368E-07 2.546E-09
11 -1.0 1.345E-03 -1.840E-04 6.721E-06 -1.728E-06 2.286E-09
12 -1.0 4.984E-03 -2.587E-04 1.308E-05 -3.927E-07 4.487E-09
13 -1.0 5.015E-03 -1.088E-04 7.835E-06 -1.184E-07 -4.537E-09
TABLE 3
Fig. 3 to 6 schematically show a ray sector diagram at the wide-angle end, a vertical axis chromatic aberration diagram at the wide-angle end, a ray sector diagram at the telephoto end, and a vertical axis chromatic aberration diagram at the telephoto end, respectively, of a zoom lens according to embodiment 1 of the present invention. The zoom lens of the present embodiment has the characteristics of high pixel, low cost, no thermalization, and infrared confocal property, which can be known by referring to the drawings.
The second embodiment:
fig. 7 and 8 schematically show structural diagrams of the zoom lens of the present embodiment at the wide-angle end and the telephoto end, respectively. Referring to fig. 7 and 8, in the present embodiment, the first lens group a of the zoom lens includes three lenses, and the second lens group b includes five lenses, wherein the seventh lens element 7 and the eighth lens element 8 form a cemented lens group.
Table 4 below lists relevant parameters of each lens of the present embodiment, including surface type, radius of curvature, thickness, refractive index of material, abbe number:
Figure BDA0002726888560000061
Figure BDA0002726888560000071
TABLE 4
Table 5 lists the aspherical coefficients of the respective aspherical lenses in the present embodiment:
surface number k a4 a6 a8 a10 a12
3 -1.0 6.905E-04 -5.568E-05 1.605E-06 -2.725E-08 1.916E-010
4 -1.0 5.425E-04 -3.712E-05 -2.705E-08 4.078E-09 7.684E-011
5 -1.0 -2.001E-04 1.668E-05 -9.118E-07 1.521E-08 5.631E-011
6 -1.0 -8.932E-05 8.877E-06 -5.028E-08 5.098E-09 2.547E-011
10 -1.0 8.945E-04 -5.258E-05 2.487E-06 -1.482E-07 -2.417E-09
11 -1.0 1.642E-03 -1.786E-04 6.567E-06 -1.875E-07 2.547E-09
12 -1.0 5.187E-03 -2.484E-04 1.317E-05 -4.030E-07 4.956E-09
13 -1.0 5.101E-03 -9.578E-05 7.656E-06 -9.483E-08 -4.670E-09
TABLE 5
Fig. 9 to 12 schematically show a ray sector diagram at the wide angle end, a vertical axis chromatic aberration diagram at the wide angle end, a ray sector diagram at the telephoto end, and a vertical axis chromatic aberration diagram at the telephoto end, respectively, of a zoom lens according to embodiment 2 of the present invention. The zoom lens of the present embodiment has the characteristics of high pixel, low cost, no thermalization, and infrared confocal property, which can be known by referring to the drawings.
The third embodiment is as follows:
fig. 13 and 14 are schematic views showing the structures of the zoom lens of the present embodiment at the wide-angle end and the telephoto end, respectively. Referring to fig. 13 and 14, in the present embodiment, the first lens group a of the zoom lens includes three lenses, and the second lens group b includes five lenses, wherein the seventh lens element 7 and the eighth lens element 8 form a cemented lens group.
Table 6 below lists relevant parameters of each lens of the present embodiment, including surface type, radius of curvature, thickness, refractive index of material, abbe number:
Figure BDA0002726888560000072
Figure BDA0002726888560000081
TABLE 6
Table 7 lists the aspherical coefficients of the respective aspherical lenses in the present embodiment:
surface number k a4 a6 a8 a10 a12
3 -1.0 9.217E-05 -3.074E-05 1.396E-06 -2.355E-08 1.306E-010
4 -1.0 -3.489E-05 -1.819E-05 5.158E-07 -3.542E-09 4.578E-011
5 -1.0 -3.241E-04 2.306E-05 -1.187E-06 1.859E-08 -1.257E-010
6 -1.0 -1.820E-04 1.573E-05 -4.864E-07 5.742E-010 -5.248E-013
10 -1.0 2.908E-04 -6.982E-05 2.249E-06 -1.232E-07 2.781E-09
11 -1.0 1.328E-03 -1.950E-04 6.459E-06 -1.657E-07 3.675E-09
12 -1.0 4.876E-03 -2.607E-04 1.278E-05 -4.030E-07 5.879E-09
13 -1.0 4.802E-03 -1.136E-04 6.722E-06 -4.367E-08 -6.365E-09
TABLE 7
Fig. 15 to 18 schematically show a ray sector diagram at the wide angle end, a vertical axis chromatic aberration diagram at the wide angle end, a ray sector diagram at the telephoto end, and a vertical axis chromatic aberration diagram at the telephoto end, respectively, of a zoom lens according to embodiment 3 of the present invention. The zoom lens of the present embodiment has the characteristics of high pixel, low cost, no thermalization, and infrared confocal property, which can be known by referring to the drawings.
The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and it is apparent to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A zoom lens comprises a compensation group (a) with negative focal power, a diaphragm and a variable-power group (b) with positive focal power in sequence from an object side to an image side, wherein the focal length of the compensation group (a) is Fa, the focal length of the variable-power group (b) is Fb, and the following conditions are satisfied: Fa/Fb is more than or equal to-0.98 and less than or equal to-0.79.
2. A zoom lens according to claim 1, wherein the compensation group (a) comprises, in order in an object-to-image direction, a first lens (1) having negative optical power, a second lens (2) having negative optical power, and a third lens (3) having positive optical power.
3. A zoom lens according to claim 2, wherein the magnification-varying group (b) includes, in order in an object-side to image-side direction, a fourth lens (4) having positive optical power, a fifth lens (5) having positive optical power, a sixth lens (6) having negative optical power, a seventh lens (7) having positive optical power, and an eighth lens (8) having negative optical power.
4. A zoom lens according to claim 3, wherein the focal length of the fourth lens (4) is f4, and the focal length Fb of the variable power group (b) satisfies the relation: f4/Fb is more than or equal to 1.32 and less than or equal to 1.86.
5. A zoom lens according to claim 3 or 4, wherein the refractive index and Abbe number of the fourth lens (4) are Nd4 and Vd4, respectively, satisfying: nd4 is more than or equal to 1.46 and less than or equal to 1.59, and Vd4 is more than or equal to 68.6 and less than or equal to 96.2.
6. A zoom lens according to claim 3, wherein the focal length of the fifth lens (5) is f5, and the focal length of the sixth lens (6) is f6, so that: f5/f6 is more than or equal to-2.8 and less than or equal to-0.95.
7. The zoom lens according to claim 3, wherein the seventh lens (7) and the eighth lens (8) constitute a cemented lens group.
8. A zoom lens according to claim 3 or 7, wherein the Abbe number of the seventh lens (7) is Vd7, and the Abbe number of the eighth lens (8) is Vd8, satisfying 34. ltoreq. Vd7-Vd 8. ltoreq.55.
9. A zoom lens according to claim 3, wherein the second lens (2), the third lens (3), the fifth lens (5) and the sixth lens (6) are aspherical lenses.
10. The zoom lens according to claim 1, wherein a focal length at a wide-angle end of the zoom lens is Fw, and a focal length Fb of the variable power group (b) satisfies a relation: Fw/Fb is more than or equal to 0.21 and less than or equal to 0.43.
CN202011105730.XA 2020-10-15 2020-10-15 Zoom lens Pending CN112083560A (en)

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CN112965223A (en) * 2021-02-22 2021-06-15 江西晶超光学有限公司 Optical system, camera module and electronic equipment

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CN110262022A (en) * 2019-06-20 2019-09-20 东莞市宇瞳光学科技股份有限公司 A kind of zoom lens
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CN212302052U (en) * 2020-10-15 2021-01-05 舜宇光学(中山)有限公司 Zoom lens
CN115561889A (en) * 2022-09-14 2023-01-03 江西凤凰光学科技有限公司 High-magnification zoom lens

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112965223A (en) * 2021-02-22 2021-06-15 江西晶超光学有限公司 Optical system, camera module and electronic equipment
CN112965223B (en) * 2021-02-22 2022-06-24 江西晶超光学有限公司 Optical system, camera module and electronic equipment

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